Sonoma Ultra 50K and Half Marathon

With well over 9,000 ft of elevation gain, the Sonoma ULTRA arguably stands as one of the toughest 50K’s in California. The half-marathon, not to be outdone, also holds its own boasting nearly 4,000 ft of gain and tough, grinding climbs.
Nestled in the hills above Kenwood, Hood Mountain Regional Park and Sugarloaf Ridge State Park feature amazing scenery and an extensive network of trails to explore.